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Problem when merging NotoSansSaurashtra-Regular.ttf with any other font.

See original GitHub issue

PS C:\ssc> pyftmerge .\NotoSansSaurashtra-Regular.ttf .\NotoSansBatak-Regular.ttf
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "C:\ ... \AppData\Local\Programs\Python\Python311\Scripts\pyftmerge.exe\__main__.py", line 7, in <module>
  File "C:\ ... \AppData\Local\Programs\Python\Python311\Lib\site-packages\fontTools\misc\loggingTools.py", line 372, in wrapper return func(*args, **kwds)
           ^^^^^^^^^^^^^^^^^^^
  File "C:\ ... \AppData\Local\Programs\Python\Python311\Lib\site-packages\fontTools\merge\__init__.py", line 199, in main font = merger.merge(fontfiles)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\ ... \AppData\Local\Programs\Python\Python311\Lib\site-packages\fontTools\merge\__init__.py", line 114, in merge table = clazz(tag).merge(self, tables)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\ ... \AppData\Local\Programs\Python\Python311\Lib\site-packages\fontTools\merge\base.py", line 72, in merge return m.mergeObjects(self, self.mergeMap, tables)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\ ... \AppData\Local\Programs\Python\Python311\Lib\site-packages\fontTools\merge\__init__.py", line 146, in mergeObjects value = mergeLogic(getattr(table, key, NotImplemented) for table in tables)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\ ... \AppData\Local\Programs\Python\Python311\Lib\site-packages\fontTools\merge\util.py", line 21, in equal assert all(item == first for item in t), "Expected all items to be equal: %s" % lst AssertionError: Expected all items to be equal: ['vmtx', NotImplemented]